lhs2TeX is a literate programming tool. It is implemented as a preprocessor that generates LaTeX code from literate Haskell sources. It allows for and provides different styles for the formatting of code. You can easily select between representing operators with mathematical symbols or with ASCII approximations, as well as deciding whether or not to highlight keywords. The formatting of your own defined tokens may be adjusted. Preprocessor-style conditionals are supported, and Haskell can be used to generate parts of the document.

Asymptote is a powerful descriptive 2D and 3D vector graphics language for technical drawing, inspired by MetaPost but with an improved C++-like syntax. It provides for figures the same high-quality level of typesetting that LaTeX does for scientific text. Asymptote is a programming language as opposed to just a graphics program. It can exploit the best features of script (command-driven) and graphical user interface (GUI) methods. High-level graphics commands are implemented in the language itself, allowing them to be easily tailored to specific applications.

AmyEdit is a LaTeX editor. It currently features tabbed
editing, word-count, spell check, syntax highlighting, undo/redo, built in integration with the LaTeX command and viewer of your choice, and customisable document templates.

fig2ps is a script for converting xfig files to PS
or PDF, processing text using LaTeX. It is
intended to help typeset good quality documents,
where the font on the pictures is exactly the same
as the font in the text. The advantage it has over
some other xfig exporters such as eepic is that
you compile the picture only once and not every
time you compile your LaTeX file, giving a great
gain in speed with complex pictures. It should
work with LyX.

PHP Runner is a simple but useful program for
easily previewing a PHP file without saving or
uploading it to a server. It has a friendly
interface with useful tools such as buttons for
the most frequently used PHP functions to make
scripting easier and faster.

sMArTH is an equation editor built on open Web
standards. The editor itself uses a SVG interface
and the application logic is implemented in
ECMAScript using the DOM. Both MathML and LaTeX are supported as exporting formats in addition to the SVG format. The most important mathematical content from both LaTeX and MathML is already provided, and this should cover the need of the majority of users. The graphical user interface allows even the most complex
equations to be built with simple "Point and
Click" techniques instead of writing convoluted
typesetting code.

OOoLatexEquation is an OpenOffice.org macro
designed to manipulate LaTeX equations. It allows
you to create equations and insert them into
OOWriter and OOImpress documents as PNG, EPS, and
EMF images, while the LateX characteristics are
saved in the image attributes. The equations are
created with and can be edited through an
intuitive GUI. OOoLatexEquation supports an inline
mode as in TexPoint which expand simple latex code
into appropriate characters using specific
TrueType fonts.

The TeXlipse plugin adds LaTeX editing support to
the Eclipse IDE. It provides both LaTeX and BibTeX
editors, a project creation wizard, and a complete
user manual of the editor functions. Additional
features include syntax highlighting, document
outline, section folding, command completion, cite
and ref completion, templates, builder
integration, viewer integration with inverse
search, and more. The plugin makes it possible for
LaTeX documents to be edited and built like normal
projects in an IDE, and the viewer support makes
it easy to check the outcome.